[Asterisk-video] patches for proper h324m ZAP signaling (was: h324m_call - extensions.conf)

[Klaus Darilion]

Hi!

H324M uses User Information Layer 1 in Bearer Capability IE to signal 
H324M (H223+H245). This information is discarded in Asterisk and also 
outgoing calls do not set it correctly.

Thus, I wrote 2 patches for asterisk/libpri to handle this correctly:

1. libpri: http://bugs.digium.com/view.php?id=10189
- updates the debug logs
- allows setting of UIL1 also for EUROISDN

2. asterisk/chan_zap: http://bugs.digium.com/view.php?id=10217
- reading and setting of the user information layer 1 using the CHANNEL 
function. (func_channel.c)
- copy the user information layer 1 value from incoming to outgoing call 
leg. This is needed when an incoming ZAP call is immediately sent out 
again. (app_dial.c)
- change chan_zap to use the defined ulser information layer 1 value 
when making digital calls instead of setting it always to -1.


examples:

fetch current UIL1 value:
exten => 107,n,Set(ul1=${CHANNEL(userinformationlayer1)})

set transfer capability to unrestricted digital and UIL1 to H324M and 
then dial out with a h324m_call():

[xcon]
exten => 665,1,h324m_call(666 at xcon)
exten => 666,1,Set(CHANNEL(transfercapability)=VIDEO)
exten => 666,n,NoOp(transfer=${CHANNEL(transfercapability)})
exten => 666,n,Set(CHANNEL(userinformationlayer1)=38)
exten => 666,n,NoOp(ul1=${CHANNEL(userinformationlayer1)})
exten => 666,n,Dial,Zap/g2/06991116123445567


regards
Klaus





Currently Asterisk does

Klaus Darilion wrote:
> Sergio Garcia Murillo wrote:
>> Hi,
>>
>> there are some issues to solve prior making an outgoing videocall.
>> The first is to chage the q931 call type, which needs a patch to the channel
>> driver in order to be able to set it upa correctly from the dialplan.A dirty
>> hack is fixing the type in q931.c so every outgoing call is a videocall.
> 
> Hi Sergio!
> 
> fYI: patch for libpri is on the tracker, patch for chan_zap and 
> func_channel (to set user information layer 1 from extension.conf) will 
> follow tomorrow.
> 
> regards
> klaus
> 
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